Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Taillight Relay
Remove taillight relay. Check continuity between taillight relay terminals No. 1 and 2. See Fig 1. Continuity should exist. Using jumper wires, apply battery voltage to terminals No. 1 and 2. Check continuity between terminals No. 3 and 5. Continuity should exist while battery voltage is applied. Continuity should not exist when battery voltage is removed. If continuity is not as specified, replace taillight relay.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.